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Q:
A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2 | B) (4x + 5y)(5x - 4y) = 20x2 + 41xy - 20y2 |
C) (4x + 5y)(5x - 4y) = 20x2 - 9xy + 20y2 | D) (4x + 5y)(5x - 4y) = 20x2 - 41xy + 20y2 |
Answer: A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2
Explanation:
Explanation: